Three trillion trees live on Earth, but there would be twice as many without humans
Each year, humans reduce the number of trees worldwide by 15 billion. This is one of the startling conclusions of new research published in the journal Nature. The study also estimates the Earth is home to more than three trillion trees – that’s 3,000 billion – so you may think that while 15 billion is a very large number, humans shouldn’t be at risk of making significant changes to global tree cover.
However, the team of 31 international scientists led by Thomas Crowther at Yale University also present evidence that the rise of human civil